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QVTO post processing gmfgen example? [message #444584]

Fri, 31 July 2009 17:34

Hauke Fuhrmann

Messages: 333
Registered: July 2009

Senior Member

Dear GMF folks,

I would like to customize my gmfgen model using a M2M transformation. I
understand I now can add a QVTO template in the diagram code gen wizard.

I'm a pure beginner with QVTO but can't spend too much time learning it
from scratch. Is there somewhere a simple example for such a QVTO
template for exactly this purpose which I could copy and adapt?

BTW: I'm just curious: Why are you using QVT and not Xtend?

Cheers,
Hauke

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Re: QVTO post processing gmfgen example? [message #467931 is a reply to message #444584]

Mon, 03 August 2009 12:11

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Hauke,

> I understand I now can add a QVTO template in the diagram code gen
QVTO transformation. Either pre-/post-reconcile or just use custom map->get
..qvto transformation instead of one coded in java/

> it from scratch. Is there somewhere a simple example for such a QVTO
> template for exactly this purpose which I could copy and adapt?
See /org.eclipse.gmf.tests/transforms/PrePostReconcileHook.qvto as an example
of pre-/post-reconcile transformations or
/org.eclipse.gmf.bridge/transforms/Map2Gen.qvto if you need to use/customize
..qvto transformation instead of java.

> BTW: I'm just curious: Why are you using QVT and not Xtend?
QVT is a standard, well-supporded, documented, it was decided to use QVT
some time ago.

-----------------
Alex Shatalin

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Re: QVTO post processing gmfgen example? [message #468046 is a reply to message #467931]

Mon, 03 August 2009 18:32

Hauke Fuhrmann

Messages: 333
Registered: July 2009

Senior Member

Alex Shatalin schrieb:
> Hello Hauke,
>
>> I understand I now can add a QVTO template in the diagram code gen
> QVTO transformation. Either pre-/post-reconcile or just use custom
> map->get .qvto transformation instead of one coded in java/
>
>> it from scratch. Is there somewhere a simple example for such a QVTO
>> template for exactly this purpose which I could copy and adapt?
> See /org.eclipse.gmf.tests/transforms/PrePostReconcileHook.qvto as an
> example of pre-/post-reconcile transformations or
> /org.eclipse.gmf.bridge/transforms/Map2Gen.qvto if you need to
> use/customize .qvto transformation instead of java.

Ok, thanks, it finally worked.
I first added both pre-/post-reconcile transformations. It first did not
work and that without any error message. I had to change the file string
in the wizard to a proper URI with the right format. Seems that there
the string is not checked by the wizard. It just fails to call the
transformation silently (it only checks the string for the first
transformation field). Maybe a bug?

Additionally, the wizard seems to store the filenames for the next time
you call the Map-GmfGen Transformation. That's good. However, I had to
disable the pre-reconcile transformation and unchecked it in the wizard
and removed the file String. However, the next time I called the wizard,
both, the check and the filename were back again. Also a bug?

Cheers,
Hauke

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Re: QVTO post processing gmfgen example? [message #468136 is a reply to message #468046]

Tue, 04 August 2009 10:37

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Hauke,

> in the wizard to a proper URI with the right format. Seems that there
> the string is not checked by the wizard. It just fails to call the
> transformation silently (it only checks the string for the first
> transformation field). Maybe a bug?
Looks like. Can you please file a request for it?

> the wizard and removed the file String. However, the next time I
> called the wizard, both, the check and the filename were back again.
> Also a bug?
Yes.

-----------------
Alex Shatalin

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Re: QVTO post processing gmfgen example? [message #468258 is a reply to message #467931]

Tue, 04 August 2009 17:53

Krzysztof Kowalczyk

Messages: 113
Registered: July 2009

Senior Member

> QVT is a standard, well-supporded, documented, it was decided to use QVT
> some time ago.

Hi,
Can you point to some well-supported (with both operational and relation
working together) and documented implementation of QVT?

Do you plan to migrate from GMF Xpand to M2T Acceleo (MOF2Text)? Xpand
is not a standard, but Acceleo is.

Regards,
Krzysztof Kowalczyk

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Re: QVTO post processing gmfgen example? [message #468365 is a reply to message #468258]

Wed, 05 August 2009 09:46

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Krzysztof,

> Can you point to some well-supported (with both operational and
> relation
> working together) and documented implementation of QVT?
Well, everywhere I wrote QVT I mean QVTo (operational part) and I think org.eclipse.m2m/org.eclipse.m2m.qvt.oml
eclipse project is such an implementation. Concerning documentation – it’s
on OMG site.

> Do you plan to migrate from GMF Xpand to M2T Acceleo (MOF2Text)? Xpand
> is not a standard, but Acceleo is.
We will migrate to this m2t engine then all our use cases will be covered
there (last summer it was not possible).

-----------------
Alex Shatalin

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